Which of the following is not a characteristic of all minerals? Shiny Naturally occurring Consistent chemical composition Crystal structure Inorganic

Why is coal not considered a mineral? Not naturally occurring Too soft Organic Not shiny Not dense enough

Why is brass not a mineral? It is a man-made alloy It is too dense It has metallic luster It doesn’t leave a streak It doesn’t glow under UV light

Why is obsidian not a mineral? It has luster It is too hard It doesn’t leave a streak It doesn’t have a crystal structure It was formed by lava crystallizing

What mineral property is most likely being tested with the following tools? Hardness Streak Specific gravity Luster Cleavage

What mineral property is being tested? Hardness Streak Fluorescence Specific gravity Luster

What mineral property is being tested? Hardness Streak Specific gravity Luster Cleavage

What mineral property is being tested? Fluorescence Streak Specific gravity Luster Effervescence

This mineral scratches a penny but cannot scratch glass. Calcite Fluorite Quartz Orthoclase Talc

This mineral scratches gypsum but is scratched by orthoclase. Talc Topaz Quartz Corundum Calcite

What test would be best to differentiate fluorite and amethyst (a type of quartz)? Color Streak Fluorescence Luster Effervescence

You find a gold mineral and want to determine whether it is gold or pyrite. What test should you use? Streak Color Effervescence Luster Smell

Quartz and calcite are both common minerals in our area and are found within rocks. Which of the following tests would most definitively determine which mineral is in the rock? Color Luster Hardness Taste Streak

What test would be best to differentiate quartz and feldspar? Color Hardness Fluorescence Fracture vs. Cleavage Streak Varieties of Quartz Feldspar

What type of cleavage does amphibole have? Basal Cubic Rhombohedral Prismatic Octahedral

What type of cleavage does fluorite have? Basal Cubic Rhombohedral Prismatic Octahedral

What type of cleavage does calcite have? Basal Cubic Rhombohedral Prismatic Octahedral

What type of cleavage does muscovite have? Basal Cubic Rhombohedral Prismatic Octahedral

What type of cleavage does halite have? Basal Cubic Rhombohedral Prismatic Octahedral

What type of luster does quartz have? Vitreous Earthy Metallic Resinous Greasy

What type of luster does pyrite have? Pearly Earthy Metallic Resinous Greasy

Which of the following minerals has the same composition as diamond (C)? Galena Quartz Corundum Graphite Calcite

To which class of minerals would pyrite (FeS) belong? Halides Sulfides Carbonates Oxides Sulfates

To which class of minerals would quartz (SiO2) belong? Phosphates Sulfides Elemental Silicates Sulfates

To which class of minerals would corundum (Al2O3) belong? Silicates Oxides Halides Carbonates Sulfates

To which class of minerals would malachite (Cu2CO3(OH)2) belong? Carbonates Sulfides Phosphates Iron ore Mafic

Olivine contains a lot of magnesium and iron and a much lower portion of silica as compared to quartz. To which class of minerals would olivine belong? Mafic Sulfates Phosphates Halides Elemental

To which class of minerals would halite (NaCl) belong? Iron ore Halides Sulfates Phosphates Oxides

To which class of minerals would gypsum (CaSO4·2H2O) belong? Silicates Phosphates Sulfates Oxides Halides

While calcite effervesces easily, this mineral will effervesce, or bubble in acid, only if it is ground into a powder. What mineral is it? Halite Corundum Gypsum Pyrite Dolomite

What mineral is known for its very high density? Corundum Graphite Sulfur Galena Halite

Which mineral would most likely be found in a cave? Coal Calcite Corundum Sulfur Halite

Which mineral, with a hardness of 9, is often used on saw blades because of its extreme hardness? Fluorite Quartz Corundum Graphite Biotite

What mineral, with a hardness of only 1, is used in make-up? Muscovite Graphite Quartz Talc Fluorite

What mineral can be identified by color alone? Sulfur Pyrite Quartz Talc Calcite

What mineral is used in pencils? Calcite Graphite Pyrite Quartz Corundum

You have two samples of quartz. Which statement may be incorrect? They have approximately the same densities. They have about the same hardness. They are the same color. They both have fracture.

This mica is the black mineral found in granite. Muscovite Graphite Biotite Calcite Quartz

The gemstone of this mineral, shown on the right, is peridot, and is the August birthstone. Quartz Olivine Biotite Fluorite Pyrite

The gemstone of this very hard mineral is ruby. Sulfur Quartz Corundum Galena Hematite

This iron ore mineral has a characteristic red streak. Hematite Corundum Chalcopyrite Olivine Talc

This iron ore is naturally magnetic. Biotite Quartz Pyrite Magnetite Muscovite